User's Manual

1. Overview
Name
No. Type
Function
GND
A7 P
Ground
GND
A8 P
Ground
GND
A9 P
Ground
IO18
A10 I/O
GPIO18, VSPICLK, HS1_DATA7
IO23
A11 I/O
GPIO23, VSPID, HS1_STROBE
IO19
A12 I/O
GPIO19, VSPIQ, U0CTS, EMAC_TXD0
IO33
A13 I/O
GPIO33, XTAL_32K_N (32.768 kHz crystal oscillator output),
ADC1_CH5, TOUCH8, RTC_GPIO8
EN
A14 I
High: On; enables the chip
Low: Off; the chip powers off
Note: Do not leave the pin floating.
IO14
TP22 I/O
GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK,
HS2_CLK, SD_CLK, EMAC_TXD2
IO15
TP21 I/O
GPIO15, ADC2_CH3, TOUCH3, MTDO, HSPICS0, RTC_GPIO13,
HS2_CMD, SD_CMD, EMAC_RXD3
IO13
TP18 I/O
GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID,
HS2_DATA3, SD_DATA3, EMAC_RX_ER
IO12
TP17 I/O
GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ,
HS2_DATA2, SD_DATA2, EMAC_TXD3
IO0
TP19 I/O
GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1,
EMAC_TX_CLK
RXD
TP16 I/O
GPIO3, U0RXD, CLK_OUT2
TXD
TP20 I/O
GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2
Espressif Systems 2 EK057 User Manual V0.2